John | Jan. 16, 2021

Neat tool

For uThing::VOC Air Quality USB dongle

I ordered this last year and it arrived in the USA recently, after a very lengthy delay (I was warned, so it was expected).

This is a very nice little product with a simple serial readout interface. I verified higher IAC and VOC readings by sticking some solvent underneath it and watching the numbers go up while I let it run. I have it hooked up to my Raspberry Pi and am looking forward to making some nice dashboards for it! Thanks for a nice little product, I hope you make (and sell) more of them.

Response from Ohmtech.io | Jan. 25, 2021

Thanks for your feedback John! We are happy to hear that you find it useful. Thanks for understanding the shipping delay. Unfortunately due to the COVID situation, shipping times and components supply issues are out of our hands, lets hope that things will get better soon.
Stay healthy!
Daniel.

Christian | Sept. 25, 2020

Works perfectly

For uThing::VOC Air Quality USB dongle

Well designed and manufactured, perfect for prototyping.
Although on older (Win7 and similar) machines you still have to write the reg file to make it work, which could be provided, it just works from that point on and the interface is quite clean.
The standard protocol is quite clean and the three formatting options seem more than enough for getting stuff going.
I havent gotten into the firmware yet, but the whole device is designed with "hackability" in mind, so I am looking forward to that!

Thank you for making this thing.

Response from Ohmtech.io | Oct. 1, 2020

Thanks for your feedback Christian!

Daniel | Nov. 4, 2019

Stephen | July 31, 2019

Does not work on raspberry pi 3 buster

For uThing::VOC Air Quality USB dongle

It is a great little ‘thing’, works perfectly with my Ubuntu laptop, works fine with ubuntu mate on raspberry pi (though mate on raspberry pi is very sluggish and not really an option) but I cannot get it to work on the same pi running Buster. I get one line of readout then multiple messages of “invalid option” until it just stops altogether?????

Response from Ohmtech.io | Aug. 11, 2020

Dear Stephen,
Thanks again for your comment. There was an issue with the older firmware (boards shipped previous to March 2020) and some Linux distributions, caused by specifically the ModemManager service which takes over any newly connected serial port. The new firmware fixes that and we've found that it plays well with Windows, Linux and OSX. The updated documentation along with instructions to update the firmware can be found here:
https://docs.ohmtech.io

Thomas | April 17, 2019

Works like it should, but no documentation

For uThing::VOC Air Quality USB dongle

This is a really cool sensor chip! It’s quite easy to get started with since it’s USB and sends data in high level formats like json.
Still it just comes as a chip in an anti static bag so you will need to search the Internet for information on how to use it.

Response from Ohmtech.io | April 17, 2019

Hi Thomas,
Thanks for supporting this project and for the review :)
Have you checked the "Datasheet" file (link below)? There it's detailed documentation about how to use it.
Please let me know if there is any information missing and I'll add it.
All the best,
Daniel.

Klaus | March 28, 2019